US5601714A - Device for filtration and collection of blood - Google Patents

Device for filtration and collection of blood Download PDF

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Publication number
US5601714A
US5601714A US08/268,491 US26849194A US5601714A US 5601714 A US5601714 A US 5601714A US 26849194 A US26849194 A US 26849194A US 5601714 A US5601714 A US 5601714A
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US
United States
Prior art keywords
blood
reservoir
ledge
inlet
filter element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US08/268,491
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English (en)
Inventor
Sverre M. Haveland
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maquet Cardiopulmonary GmbH
Original Assignee
Polystan Holding AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Polystan Holding AS filed Critical Polystan Holding AS
Assigned to POLYSTAN HOLDING A/S reassignment POLYSTAN HOLDING A/S ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HAVELAND, SVERRE MOE
Priority to US08/268,491 priority Critical patent/US5601714A/en
Priority to DK95923204T priority patent/DK0767682T3/da
Priority to AU27861/95A priority patent/AU2786195A/en
Priority to PCT/DK1995/000281 priority patent/WO1996000593A1/en
Priority to AT95923204T priority patent/ATE170760T1/de
Priority to EP95923204A priority patent/EP0767682B1/de
Priority to DE69504676T priority patent/DE69504676T2/de
Publication of US5601714A publication Critical patent/US5601714A/en
Application granted granted Critical
Assigned to POLYSTAN A/S reassignment POLYSTAN A/S ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: POLYSTAN HOLDING A/S
Assigned to JOSTRA AG reassignment JOSTRA AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: POLYSTAN A/S
Assigned to MAQUET CARDIOPULMONARY AG reassignment MAQUET CARDIOPULMONARY AG CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: JOSTRA AG
Assigned to MAQUET CARDIOPULMONARY AG reassignment MAQUET CARDIOPULMONARY AG CORRECTION TO THE PROPERTY NUMBER IN REEL/FRAME 016460/0627 Assignors: AG, JOSTRA
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/3621—Extra-corporeal blood circuits
    • A61M1/3627—Degassing devices; Buffer reservoirs; Drip chambers; Blood filters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/3621—Extra-corporeal blood circuits
    • A61M1/3627—Degassing devices; Buffer reservoirs; Drip chambers; Blood filters
    • A61M1/3632—Combined venous-cardiotomy reservoirs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/75—General characteristics of the apparatus with filters

Definitions

  • the present invention relates to a device for filtration and collection of blood from two different sources during a surgical procedure, said device comprising
  • a housing made of a rigid material and having a cover, side walls, and a bottom wall;
  • a reservoir defined within the device for collecting filtered blood and provided with an outlet in the bottom wall;
  • a first blood filter element inside the housing comprising in series a layer of porous defoaming material and a screen filter;
  • a first blood inlet in said housing which inlet is connected with means providing a first blood path in the device through said first inlet, said first blood filter element, said reservoir, and said blood outlet;
  • a second blood filter element comprising in series a layer of porous defoaming material, a depth filter and a stocking
  • At least one second blood inlet in the cover which inlet is connected with means providing a second blood path in the device through said second inlet, said second blood filter element, said reservoir, and said blood outlet;
  • Devices of this type are used in surgical procedures referred to in the art as cardiopulmonary bypass operations.
  • cardiopulmonary bypass operations the normal function of the patient's heart and lungs is suspended, and the function of these organs is replaced by artificial blood handling and treating units in a life-sustaining extracorporeal blood flow circuit.
  • the main body of the patient's blood is typically withdrawn from the patient through a cannula inserted into the right atrium and passed through a filtered reservoir, a blood pump, a blood oxygenator, and an arterial blood filter before being returned to the patient through a cannula inserted into the aorta.
  • the main blood stream is in accordance with typical practice combined with blood collected from the surgical field, which blood is gathered in one or more cardiac vacuum suckers and after defoaming and depth filtering collected in the reservoir, which is common for the two blood paths before being extracted through the blood outlet through an extracorporeal blood pump.
  • a device Of this type is disclosed in EP-B-0 190 020.
  • the known device comprises a number of elements arranged inside the filter for supporting the filter and the defoaming material and for providing the flow paths for the two blood streams within the filter. This is especially disadvantageous if the filter is to be made in a number of different sizes because of the large number of parts.
  • the device according to the invention is characteristic in that the housing above the bottom comprises a wall forming a ledge in said reservoir and defining a bottom wall in a portion of the reservoir with enlarged cross-section;
  • said second filter is mounted in the cover and is extending downwards towards said ledge, with which it is in contact,
  • said first filter is extending upwards from said ledge and is self-supporting
  • said first and second filters are arranged side by side in parallel relationship.
  • the arrangement of the filters side by side results in a compact construction of the device and a short path of the filtered blood from the filter to the reservoir.
  • the filters may have a shape which increases the filter area compared with filters of circular cross-section.
  • the filters preferably have an oval cross-section and a rounded profile. This shape is suited for making the filters self-supporting and is providing a comparatively large filter area in relation to the volume inside the filter.
  • the filters are preferably bonded into oval recesses in the cover and ledge of the housing forming a rigid fastening of thee filters.
  • the ledge In order to ensure a smooth flow of blood into the reservoir, the ledge has a gradient towards an inclined part of the reservoir. This arrangement prevents the forming of bubbles in the filtered blood.
  • the filters are made from blanks which are welded along the edges before being turned inside out. The welding seam contributes to the self-supporting capacity of the filters.
  • FIG. 1 is a side view of an extracorporeal blood treatment and collection device according to the invention
  • FIG. 2 is a front view of the device according to FIG. 1;
  • FIGS. 3 and 5 are sectional view along the line III--III in FIG. 2;
  • FIGS. 4a-d are front, side, sectional, and perspective views of a filter element for the device according to the invention.
  • a disposable blood filtration and collection device of the invention is Shown in FIGS. 1 to 3.
  • the device comprises a housing 2 having side walls 4, a bottom wall 6, and a cover 8.
  • the device further comprises a wall 10 forming a ledge inside the housing, which ledge is the bottom wall in a portion of the housing with an enlarged cross-section.
  • the device has a blood inlet 12 in communication with the inner space of a first blood treatment element 14 and a number of parallel blood inlets 16,18,20,22,24 placed in a top cap 28 on the cover 8 and in communication with the inner space of a second blood filter element 30.
  • one or more lines of tubing conducting cardiotomy suction blood are connected to one or more of the inlets 16,18,20,22,24, and a line carrying the venous blood return stream is connected to the inlet 12.
  • the cardiotomy blood passes through the element 30 and the venous return blood passes through and is filtered by the element 14.
  • the filtered venuous blood is combined with the filtered cardiotomy blood from the second element 30, and the combined streams of blood are collected in a reservoir defined generally by the side walls 4 and the bottom wall 6 of the housing.
  • the combined treated cardiotomy and venuous blood is withdrawn from the device through a treated blood outlet 32.
  • Tubing organizers 44 are elements for fixing the various tubes required for connecting and/or interconnecting when using the blood filter.
  • Legs 46 with feet 48 fixed thereon support the filter during use.
  • the feet 48 may be glued to the upper part of an oxygenator (not shown) when the filter is used in conjunction with such a device.
  • the upper part of the oxygenator may be provided with mating indentations for alignment.
  • the feet 48, as well as legs 46, are provided with bores (not shown, extending vertically in the whole length of feet 48 and legs 46 as viewed in FIGS. 1--3).
  • the apparatus according to the invention may conveniently be supported during use by placing it on a support which has a post or hook which engages in one or both of these bores.
  • the housing is made preferably by injection moulding from a preferably transparent plastic material.
  • the housing is formed by bonding a disc-shaped cover 8 to a generally cup-shaped body portion 33.
  • the cover 8 may include a gas vent 37 and additional ports 39 and in the top cap 28 a gas vent 40 and a number of additional ports 41 for introduction of blood or other fluids upstream or downstream of the filter element 30.
  • the venous blood inlet 12 and the treated blood outlet 32 may be in a single-piece construction with the housing, or, as shown in the preferred embodiment, separate components sealed and bonded to the wall of the housing.
  • the blood filter elements 14 and 30 are arranged side by side in a parallel relationship.
  • the blood filter elements are self-supporting, the first element 14 is upstanding from the ledge 34, and the second element 30 is connected to and hanging downward from the cover 8.
  • the length of the second element 30 is such that the lower end of the element is in contact with the ledge.
  • Blood which has been filtered by the second element 30 flows along the surface of the element and passes smoothly to the upper surface of the ledge 34, which has a gradient towards an inclined part 35 of the side wall 4. With this arrangement the formation of droplets falling into a free surface of the blood collected in the reservoir is avoided.
  • the blood filter element 14 is inserted into an oval groove 36 in the ledge, after which it is sealed by means of a polyurethane potting compound.
  • the second filter element 30 is inserted in a similar groove 38 in the cover 8 and similarly sealed with a potting compound.
  • FIGS. 4 a-d show in detail a filter element.
  • the element comprises two blanks 42 welded together along the edges to form a bag-like assembly, which afterwards is turned inside out.
  • the welding seam 43 forms a stiffening formation making the element self-supporting and holding the sides of the element apart and providing the element with an oval cross-section.
  • the blood filter element 12 comprises an inner layer of a porous defoaming material, preferably a reticulated polyurethane foam treated with an antifoam compound, such as a silicone antifoam agent, and an outer layer of, for example, a thin screen filter of uniform pore size, preferably a woven nylon or polyester screen having a pore size between 50 and 200 microns, preferably about 175 microns.
  • the blood filter element 30 comprises an inner layer of porous defoaming material followed by a layer of a non-wowen depth filter material, preferably a fibrous polyester depth filter material having a mean pore size of 20 to 50 microns, preferably about 40 microns, and an outside stocking.
  • a non-wowen depth filter material preferably a fibrous polyester depth filter material having a mean pore size of 20 to 50 microns, preferably about 40 microns, and an outside stocking.
  • the blood filtration device may also include fittings for suspending the device on an oxygenator/heat exchanger or alternatively onto a hanger from a heart-lung machine (HLM).
  • HLM heart-lung machine
  • the cover, the top cap, the body portion, and the inlet and outlet fittings are preferably made by conventional methods from a clear plastic material, preferably a copolyester or polycarbonate.

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Cardiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • External Artificial Organs (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Centrifugal Separators (AREA)
US08/268,491 1994-06-30 1994-06-30 Device for filtration and collection of blood Expired - Fee Related US5601714A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US08/268,491 US5601714A (en) 1994-06-30 1994-06-30 Device for filtration and collection of blood
DE69504676T DE69504676T2 (de) 1994-06-30 1995-06-30 Vorrichtung zur entnahme und filtration von blut
AU27861/95A AU2786195A (en) 1994-06-30 1995-06-30 A device for filtration and collection of blood
PCT/DK1995/000281 WO1996000593A1 (en) 1994-06-30 1995-06-30 A device for filtration and collection of blood
AT95923204T ATE170760T1 (de) 1994-06-30 1995-06-30 Vorrichtung zur entnahme und filtration von blut
EP95923204A EP0767682B1 (de) 1994-06-30 1995-06-30 Vorrichtung zur entnahme und filtration von blut
DK95923204T DK0767682T3 (da) 1994-06-30 1995-06-30 Indretning til filtrering og opsamling af blod

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/268,491 US5601714A (en) 1994-06-30 1994-06-30 Device for filtration and collection of blood

Publications (1)

Publication Number Publication Date
US5601714A true US5601714A (en) 1997-02-11

Family

ID=23023242

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/268,491 Expired - Fee Related US5601714A (en) 1994-06-30 1994-06-30 Device for filtration and collection of blood

Country Status (7)

Country Link
US (1) US5601714A (de)
EP (1) EP0767682B1 (de)
AT (1) ATE170760T1 (de)
AU (1) AU2786195A (de)
DE (1) DE69504676T2 (de)
DK (1) DK0767682T3 (de)
WO (1) WO1996000593A1 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5770073A (en) * 1996-03-15 1998-06-23 Minntech Corporation Combined cardiotomy and venous reservoir
JP2000501321A (ja) * 1996-08-30 2000-02-08 バクスター インターナショナル インコーポレイテッド 心臓切開流体および静脈血用組み合わせレザバー
US6180058B1 (en) * 1996-06-07 2001-01-30 Terumo Cardiovascular Systems Corporation Blood treatment system
US20090081079A1 (en) * 2006-04-13 2009-03-26 Haemair Ltd. Blood/Air Mass Exchange Apparatus
US8545754B2 (en) 2009-04-23 2013-10-01 Medtronic, Inc. Radial design oxygenator with heat exchanger
JP2014183947A (ja) * 2013-03-22 2014-10-02 Jms Co Ltd 貯血槽
US11419970B2 (en) * 2016-12-22 2022-08-23 Daicel Corporation Blood filter
JP2023142332A (ja) * 2022-03-25 2023-10-05 テルモ株式会社 貯血槽
JP2025514440A (ja) * 2022-04-29 2025-05-02 武漢唯柯医療科技有限公司 両側ロック機能を有する経カテーテル大動脈弁置換装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005011740B4 (de) 2005-03-11 2008-02-14 Maquet Cardiopulmonary Ag Venöse Blasenfalle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0190020A2 (de) * 1985-01-29 1986-08-06 Shiley Incorporated Eine Einheit bildende Vorrichtung mit einem Behälter für venöses Blut und mit einem Filter für im Operationsfeld gesammeltes Blut
US5039430A (en) * 1989-11-20 1991-08-13 Medtronic, Inc. Method and apparatus for combining cardiotomy and venous blood
US5127900A (en) * 1989-12-19 1992-07-07 Medtronic Inc. Cardiotomy reservoir
US5411705A (en) * 1994-01-14 1995-05-02 Avecor Cardiovascular Inc. Combined cardiotomy and venous blood reservoir

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0190020A2 (de) * 1985-01-29 1986-08-06 Shiley Incorporated Eine Einheit bildende Vorrichtung mit einem Behälter für venöses Blut und mit einem Filter für im Operationsfeld gesammeltes Blut
US5039430A (en) * 1989-11-20 1991-08-13 Medtronic, Inc. Method and apparatus for combining cardiotomy and venous blood
US5127900A (en) * 1989-12-19 1992-07-07 Medtronic Inc. Cardiotomy reservoir
US5411705A (en) * 1994-01-14 1995-05-02 Avecor Cardiovascular Inc. Combined cardiotomy and venous blood reservoir

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5770073A (en) * 1996-03-15 1998-06-23 Minntech Corporation Combined cardiotomy and venous reservoir
US6180058B1 (en) * 1996-06-07 2001-01-30 Terumo Cardiovascular Systems Corporation Blood treatment system
JP2000501321A (ja) * 1996-08-30 2000-02-08 バクスター インターナショナル インコーポレイテッド 心臓切開流体および静脈血用組み合わせレザバー
JP3296436B2 (ja) 1996-08-30 2002-07-02 ジョストラ ベントレイ インコーポレイテッド 心臓切開流体および静脈血用組み合わせレザバー
US20090081079A1 (en) * 2006-04-13 2009-03-26 Haemair Ltd. Blood/Air Mass Exchange Apparatus
US8529834B2 (en) * 2006-04-13 2013-09-10 Haemair Ltd. Blood/air mass exchange apparatus
US8545754B2 (en) 2009-04-23 2013-10-01 Medtronic, Inc. Radial design oxygenator with heat exchanger
JP2014183947A (ja) * 2013-03-22 2014-10-02 Jms Co Ltd 貯血槽
US11419970B2 (en) * 2016-12-22 2022-08-23 Daicel Corporation Blood filter
JP2023142332A (ja) * 2022-03-25 2023-10-05 テルモ株式会社 貯血槽
JP2025514440A (ja) * 2022-04-29 2025-05-02 武漢唯柯医療科技有限公司 両側ロック機能を有する経カテーテル大動脈弁置換装置

Also Published As

Publication number Publication date
EP0767682A1 (de) 1997-04-16
ATE170760T1 (de) 1998-09-15
DE69504676T2 (de) 1999-04-22
WO1996000593A1 (en) 1996-01-11
AU2786195A (en) 1996-01-25
DE69504676D1 (de) 1998-10-15
DK0767682T3 (da) 1999-06-07
EP0767682B1 (de) 1998-09-09

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